Evaluation of Resistance of Different Kiwifruit Varieties (Lines) to Canker Disease and Brown Spot Disease  

作　　者：Wenwen Su Chongpei Zheng Zhencheng Han Chunguang Ren Di Wu Tao Li Yi Yang Weijie Li 

机构地区：[1]Institute of Mountain Resources of Guizhou Province,Guizhou Academy of Sciences,Guiyang,550001,China [2]Guizhou Botanical Garden,Guizhou Academy of Sciences,Guiyang,550001,China [3]Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education),Institute of Agro-Bioengineering/College of Life Sciences,Guizhou University,Guiyang,550025,China

出　　处：《Phyton-International Journal of Experimental Botany》2024年第6期1249-1261,共13页国际实验植物学杂志（英文）

基　　金：supported by the following grants:Science and Technology Support Plan of Guizhou Province:Breeding Research and Demonstration of all-Red Bud Transformation of“GH-1”Clone of“Hong yang”Kiwifruit(Guizhou Family Combination Support[2021]General 234);the National Key Research and Development Program“Quality and Efficiency Improvement Technology Integration and Demonstration of Advantageous Characteristic Industries in Guizhou Karst Mountain Area(2021YFD1100300)”Post-Subsidy Fund;Task 3 of National Key Research and Development Program,Green Prevention and Control Technology Integration and Demonstration of Main Diseases and Insect Pests of Kiwifruit in Shuicheng City,China(2022YFD1601710-3).

摘　　要：Kiwifruit canker and brown spot are significant diseases affecting kiwis,caused by Pseudomonas syringae patho-genic variations(Pseudomonas syringae pv.Actinidiae(Psa))and Corynesporapolytica(Corynespora cassiicola).At present,the research on canker disease and brown spot disease mainly focuses on the isolation and identification of pathogenic bacteria,drug control,resistance gene mining and functional verification.Practice has proved that breeding disease resistant varieties are an effective method to control canker disease and brown spot disease.However,most existing cultivars lack genes for canker and brown spot resistance.Wild kiwifruit resources in nat-ure exhibit extensive genetic diversity due to prolonged natural selection,containing numerous resistance genes.But,due to insufficient understanding of the resistance of most kiwifruit varieties(lines)to canker disease and brown spot disease,some high-quality resources have not been fully utilized.The incidence of canker and brown spot of 18 kiwifruit cultivars(lines)was measured by inoculating isolated branches and leaves,and their resistance to canker and brown spot was analyzed according to the length,disease index,mean diameter,and systematic clustering.The results were as follows:Among 18 different kiwifruit varieties(lines)for canker disease,there were two highly resistant materials,eight disease-resistant materials,four disease-susceptible materials,and two highly susceptible materials.Moreover,regarding brown spot disease,there were one highly resistant material,five dis-ease-resistant materials,four susceptible materials,and three highly susceptible materials.Furthermore,four resources were resistant to both diseases.The outcomes provided a theoretical basis for breeding kiwifruit against canker and brown spot.

关 键 词：KIWIFRUIT canker disease brown spot resistance evaluation 

分 类 号：S436.6[农业科学—农业昆虫与害虫防治]